Answer the following questions briefly.
A water clock is better for measuring time than a sundial. Why?

Important Questions on Time and Motion

MEDIUM

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q E

Answer the following questions briefly.
Differentiate between periodic and non–periodic motion with examples.

MEDIUM

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q E

Answer the following questions briefly.
Define speed. Mention the SI unit of speed.

MEDIUM

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q F

Answer the following questions in detail.
The length of a simple pendulum is increased. What happens to its time period?

MEDIUM

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q F

Answer the following questions in detail.
The mass of the pendulum bob is doubled. What will happen to its time period?

MEDIUM

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q F

What is distance-time graph? What is the nature of the distance-time graph of a body in the following cases? Represent graphically.
The body is at rest

EASY

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q F

Answer the following questions in detail.
What is distance–time graph? What is the nature of the distance–time graph of a body in the following cases? Represent graphically.
The body is moving with constant speed

EASY

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q F

Answer the following questions in detail.
What is distance–time graph? What is the nature of the distance–time graph of a body in the following cases? Represent graphically.
The body is moving with varying speed.

EASY

7th CBSE

IMPORTANT

Science Now 7>Chapter 12 - Time and Motion>EXERCISE>Q G

Identify the biological process in our body that is nearly periodic and that can be used to measure time.